/********************************** 小于等于1200px **********************************/
@media screen and (max-width: 1200px) {
  .header {
    width: 99%;
  }
  .nav>li{
    width: 80px;
  }
  .header .nav_logo{
    height: 30px;
  }

  /* 选项卡样式 */
  .sec_nav_border{
    width: 95%;
  }

  /********************************** 技术优势  **********************************/
  .adv_nav1_part1, .adv_nav1_part2, .adv_nav1_part3, .adv_nav1_part4,.adv_swiper{
    width: 95%;
  }

  /* 技术优势 安全除醛 */
  /* .adv_nav1_part2 .adv_nav1_img1{
    width: auto;
  } */
  .adv_nav2_part1,.adv_nav2_part2{
    width: 95%;
    padding-left: 50px;
    padding-right: 50px;
    margin-bottom: 50px;
  }
  .adv_nav2_part1{
    padding-left: 0;
  }
  .adv_nav2_part3{
    width: 95%;
  }
  .bg_h{
    width: 95%;
  }

  /* 技术优势 永不反弹 */
  .adv_nav3,.adv_nav4{
    width: 95%;
    padding-left: 50px;
    padding-right: 50px;
  }
  .adv_nav3 .adv_nav3_cont .adv_nav3_l{
    margin-right: 40px;
  }
  .adv_nav3 .adv_nav3_cont .adv_nav3_l img{
    height: 300px;
  }



  

  /* footer样式开始 */
  .foot_nav_con ul li.foot_nav_index{
    padding: 0 25px;
  }
  .foot_margin0{
    width: 95%;
  }
  .foot_bottom_cont{
    width: 95%;
  }
  .foot_bottom_l .foot_bottom_list .foot_list{
    padding-right: 15px;
    padding-left: 45px;
  }
  .foot_nav .foot_nav_border{
    width: 95%;
  }
  .foot_nav_con ul li:nth-child(1){
    padding: 0 18px;
  }
  .foot_weichet{
    width: 180px;
  }

}
/**********************************  小于等于990px **********************************/
@media screen and (max-width: 990px) {
  .header {
    width: 99%;
  }
  .nav>li{
    width: 65px;
  }
  .header .nav_logo{
    height: 30px;
  }
  .nav>li>p {
    font-size: 14px;
    height: 30px;
    line-height: 20px;
  }
  .nav>li>p span{
    font-size: 10px;
  }


  /* 选项卡 */
  .sec_nav li{
    margin: 0 16px;
    font-size: 18px;
  }
  .nav_title img{
    height: 16px;
  }
  .sec_nav_border>i{
    width: 100px;
  }
  #main{
    padding-bottom: 110px;
  }

  /* 技术优势 光触媒 */
  .adv_nav1_part1,.adv_nav1_part4{
    padding-right: 50px;
    padding-left: 50px;
  }
  .adv_nav1_part2{
    display: block;
  }
  .adv_nav1_part2 .nav1_part2_l{
    margin-bottom: 20px;
  }
  .adv_nav1_part2 .nav1_part2_l{
    padding-right: 0;
  }
  
  /* 技术优势 安全除醛 */
  .adv_nav2_part1{
    margin-bottom: 50px;
  }
  .adv_nav2_part1 img{
    height: 250px;
  }

  /* 技术优势 永不反弹 */
  .adv_nav3{
    padding-left: 30px;
    padding-right: 30px;
  }
  .adv_nav3 .adv_nav3_cont .adv_nav3_l{
    margin-right: 20px;
  }
  .adv_nav3 .adv_nav3_cont .adv_nav3_l img{
    height: 350px;
  }



    /* 留言板 */
    .foot_ly_border{
      width: 95%;
    }





  /* footer样式开始 */
  .foot_nav .foot_nav_border{
    width: 95%;
  }
  .foot_nav_con ul li.foot_nav_index{
    padding: 0 15px;
  }


}

/********************************** 小于等于914 **********************************/
@media screen and (max-width: 914px) {
  .sec_nav{
    margin-bottom: 90px;
  }
  


  /* 技术优势 光触媒 */
  .adv_swiper{
    margin: 50px auto;
  }

  /* 技术优势 安全除醛 */
  .adv_nav2_part1,.adv_nav2_part2{
    margin-bottom: 30px;
    padding-left: 30px;
    padding-left: 30px;
  }
  .adv_nav2_part1 img{
    height: 210px;
  }

  /* 技术优势 永不反弹 */  
  .adv_nav3 .adv_nav3_cont {
    display: block;
  }
  .adv_nav3 .adv_nav3_cont .adv_nav3_l{
    margin-right: 0;
    margin-bottom: 20px;
  }
  .adv_nav3 .adv_nav3_title{
    margin-bottom: 24px;
  }

  /* 技术优势 OR除臭 */
  .adv_nav4 .adv_nav4_cont .adv_nav4_l{
    margin-right: 10px;
  }
  .adv_nav4 .adv_nav4_title h2{
    font-size:40px;
    margin-bottom: 5px;
  }
  .adv_nav4 .adv_nav4_title p{
    letter-spacing: 4px;
  }

  

  /* 底部 */
  .foot_bottom .foot_bottom_r .foot_logo{
    width: 100px;
    margin-bottom: 15px;
  }
  .foot_bottom .foot_bottom_r .foot_weixin{
    width:90px
  }
  .foot_bottom_l h3{
    font-size: 24px;
    margin-bottom: 15px;
  }
  .foot_bottom_l .foot_bottom_list .foot_list i{
    transform: scale(0.8);
  }
  .foot_bottom_l .foot_bottom_list{
    padding-bottom: 10px;
  }
  .foot_bottom_l .foot_bottom_list .foot_list .foot_list_c p:last-child{
    font-size: 20px;
  }
  .foot_bottom_l .foot_address{
    padding-top: 10px;
    line-height: 26px;
  }
  .foot_nav_con ul li:nth-child(1){
    padding: 0 10px;
  }
 
}

/********************************** 小于等于768 **********************************/
@media screen and (max-width: 768px) {
  #sec_banner{
    width: 100%;
    height: 100%;
  }
  .sec_top{
    margin-top: 50px;
  }
  #load_header{
    height: 50px;
    z-index: 999;
    width: 100%;
    position: fixed;
    top: 0;
    left: 0;
    background-color: #fff;
    padding: 0 30px;
    box-sizing: border-box;
  }
  .header {
    display: none;
  }
  .wap_header{
    display: block;
  }
  .wap_header .wap_nav{
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 50px;
  }
  .wap_header .wap_nav .wap_nav_logo{
    height: 30px;
  }
  .wap_header .wap_nav .wap_nav_btn{
    width: 40px;
    height: 40px;
  }
  .wap_header .wap_nav .wap_nav_btn>i{
    position: relative;
    top: 50%;
    margin-top: -1px;
    display: block;
    width: 40px;
    height: 2px;
    background: #353535;
  }
  .wap_header .wap_nav .wap_nav_btn>i::before,
  .wap_header .wap_nav .wap_nav_btn>i::after{
    position: absolute;
    left: 0;
    display: block;
    content: '';
    width: 40px;
    height: 2px;
    background: #353535;
    transform: rotate(0deg);
    transition: all 0.3s;
  }  
  .wap_header .wap_nav .wap_nav_btn>i::before{
    top: 10px;
  }
  .wap_header .wap_nav .wap_nav_btn>i::after{
    top: -10px;
  }

  /* 移动端导航点击后的效果 */
  .wap_header .wap_nav .wap_nav_btn_c>i{
    background: transparent;
  }
  .wap_header .wap_nav .wap_nav_btn_c>i::before
  {
    transform: rotate(45deg);
    top: 0;
  }
  .wap_header .wap_nav .wap_nav_btn_c>i::after{
    transform: rotate(-45deg);
    top: 0;
  }
  /* 移动端导航点击后的效果 end */

  .wap_header .wap_nav_list{
    display: none;
    position: fixed;
    top: 50px;
    left: 0;
    z-index: 999;
    width: 100%;
    height: 100%;
    padding-top: 20px;
    background-color: #f2f2f2;
  }
  .current_syl{
    display: block;
  }
  .wap_header .wap_nav_list>li{
    width: 100%;
    height: 40px;
    border-bottom: 2px solid #ddd;
    overflow: hidden;
  }
  .wap_header .wap_nav_list>li a{
    display: block;
    width: 100%;
    height: 40px;
    line-height: 40px;
    font-size: 18px;
    color: #2d2d2d;
    padding-left: 20px;
  }
  .wap_header .wap_nav_list>li ul{
    width: 100%;
    height: 100%;
  }
  .wap_header .wap_nav_list>li ul li{
    width: 100%;
  }
  .wap_header .wap_nav_list>li ul li a{
    display: block;
    width: 100%;
    height: 60px;
    line-height: 60px;
    font-size: 20px;
  }
  #banner{
    margin-top: 50px;
    margin-bottom: 50px;
  }
  .swiper-button-next,.swiper-button-prev{
    display: none;
  }

  /* 选项卡 */
  #main{
    padding-bottom: 60px;
  }
  .nav_title,.sec_nav_border>i{
    display: none;
  }
  .sec_nav li{
    margin: 0 10px;
  }
  .sec_nav_border{
    height: 60px;
  }
  .sec_nav{
    margin-bottom: 60px;
  }
 

  /* 技术优势 光触媒 */
  .adv_nav1_part1,.adv_nav1_part4{
    margin-bottom: 30px;
  }
  
  .adv_nav1_part3{
    margin-top: 50px;
  }
  .adv_swiper{
    margin: 30px auto;
  }

  .adv_nav1_part4{
    margin-top:30px;
  }
  .adv_title h2{
    font-size: 22px;
  }


  /* 技术优势 安全除醛 */
  .adv_nav2_part1,.adv_nav2_part2{
    margin-bottom: 30px;
    padding-left: 30px;
    padding-left: 30px;
  }

  .adv_nav2_part1{
    display: block;
    margin-top: 15px;
  }
  .adv_nav2_part1 img{
    width: 100%;
    height: 100%;        
  }
  .adv_nav2_part1 img:first-child{
    margin-bottom: 10px;
  }

  /* 技术优势 用不反弹 */
  .adv_nav3 .adv_nav3_title h3{
    font-size: 20px;
  }
  .adv_nav3 .adv_nav3_title i{
    margin: 5px 0 8px;
  }
  .adv_nav3 .adv_nav3_cont .adv_nav3_l img{
    width: 100%;
    height: 100%;
  }

    /* 技术优势 OR除臭 */
    .adv_nav4_r{
      display: none;
    }








  /* 留言板 */
  .foot_ly .foot_ly_border .input_t{
    flex-wrap: wrap;
    margin-bottom: 0;
  }
  .foot_ly .foot_ly_border .input_t>input{
    width: 94%;
    margin-bottom: 5px;
    font-size: 16px;
  }
  .foot_ly .foot_ly_border .input_b{
    width: 94%;
    margin-bottom: 5px;
  }
  .foot_ly .foot_ly_border .input_b .text{
    font-size: 16px;
  }
  .foot_ly .foot_ly_border .btn{
    width: 97%;
    font-size: 16px;
  }

  /* footer开始 */
  .foot_nav,.foot_bottom{
    display: none;
  }
  .wap_foot,.wap_foot_nav{
    display: flex;
    flex-flow: row  wrap;
    justify-content: space-evenly;
    align-self: center;
  }
  .wap_foot_nav{
    padding: 30px 0;
    border-top:1px solid #cbcbcb;
    border-bottom:1px solid #cbcbcb;
    font-weight: bold;
    background-color: #fafafa;

  }
  .wap_foot{
    padding-top: 20px;
    width: 95%;
	  margin: 0 auto;
  }
  .wap_foot .wap_foot_list {
    width: 30%;
    margin-bottom: 30px;
  }
 
  .wap_foot .wap_foot_list:last-child{
    width: 100%;
    margin: 0 auto;
    font-size: 20px;
    line-height: 28px;
  }
  .wap_foot .wap_foot_list p:first-child{
    font-size: 16px;
    margin-bottom: 5px;
  }
  .wap_foot .wap_foot_list p:last-child{
    font-size: 24px;
    font-weight: bold;
  }
  .wap_foot .wap_foot_list .foot_logo{
    height: 77px;
  } 
  .wap_foot .wap_foot_list .foot_weixin {
    height: 119px;
  }
  .foot_center{
    line-height: 40px;
  }
  .foot_end{
    padding: 20px 0;
  }
  
}

/********************************** 小于等于499 **********************************/
@media screen and (max-width: 499px){
  #load_header{
    padding: 0 20px;
  }
  .wap_header .wap_nav .wap_nav_logo{
    height: 26px;
  }
  .wap_header .wap_nav .wap_nav_btn{
    width: 35px;
    height: 35px;
  }
  .wap_header .wap_nav .wap_nav_btn>i,
  .wap_header .wap_nav .wap_nav_btn>i::before, 
  .wap_header .wap_nav .wap_nav_btn>i::after{
    width: 35px;
  }
/*   
  .wap_header .wap_nav .wap_nav_btn>i::before{
    top: 9px;
  }
  .wap_header .wap_nav .wap_nav_btn>i::after{
    top:-9px;
  }
  .wap_header .wap_nav .wap_nav_btn_c>i::before{
    transform: rotate(45deg);
    top: 0;
  }
  .wap_header .wap_nav .wap_nav_btn_c>i::after{
    transform: rotate(-45deg);
    top: 0;
  } */

  #banner{
    margin-bottom: 30px;
  }
  /* 选项卡 */
  .sec_nav{
    margin-bottom: 30px;
  }

  /* 技术支持 光触媒 */
  .adv_nav1_part1,.adv_nav1_part4{
    padding-right: 16px;
    padding-left: 16px;
  }
  .adv_nav1_part1,.adv_nav1_part4{
    margin-bottom: 15px;
  }
  .adv_nav1_part3{
    margin-top: 30px;
  }
  .adv_title h2{
    letter-spacing:2px;
  }
  .adv_nav1_part4{
    margin-top:0px;
  }
  .adv_title i{
    margin-right: 5px;
  }
  .adv_nav1_part2 .nav1_part2_l p:nth-child(2){
    margin-top: 0;
    }
  /* 技术优势 安全除醛 */
  .adv_nav2_part1{
    padding-left: 0px;
    padding-right: 0px
  }
  .adv_nav2_part2,.adv_nav2_part3{
    padding-left: 10px;
    padding-right: 10px;
  }
  .adv_nav2_part1 img{
    width: 100%;
    height: 100%;
  }
  .adv_title h2 {
    font-size: 18px;
  }
  .adv_nav3 .adv_nav3_title h3{
    font-size: 16px;
  }
  .adv_nav2_part3 .adv_nav2_img img{
    width: 160px;
  }
  .bg_h,.adv_nav2_part2 .adv_nav2_f{
    display: none;
  }
  .adv_nav2_part2 .adv_nav2_c{
    line-height: 20px;
    text-align: left;
  }

  /* 技术优势 永不反弹 */
  .adv_nav3 .adv_nav3_title{
    margin-bottom: 20px;
  }

  /* 技术优势 OR除臭 */
  .adv_nav3,.adv_nav4{
    padding-left: 20px;
    padding-right: 20px;
  }
  .adv_nav4 .adv_nav4_img {
    margin-bottom: 24px;
}
  .adv_nav4 .adv_nav4_title{
    margin-bottom: 20px;
  }
  .adv_nav4 .adv_nav4_title h2 {
    font-size:36px;
    margin-bottom: 5px;
  }
  .adv_nav4 .adv_nav4_title p {
    letter-spacing: 2px;
}







  /* 小屏幕底部样式 */
  .wap_foot_nav{
    padding: 10px 0px;
  }
  .wap_foot_nav li{
    padding: 5px 7px;
  }
  .wap_foot .wap_foot_list:last-child{
    font-size: 14px;
    line-height: 20px;
  }
  .wap_foot .wap_foot_list p:first-child{
    font-size: 14px;
  }
  .wap_foot .wap_foot_list p:last-child{
    font-size: 16px;
  }
  .wap_foot .wap_foot_list .foot_logo{
    height: 60px;
  } 
  .wap_foot .wap_foot_list .foot_weixin {
    height: 50px;
    margin-left: 20px;
  }
 
  .wap_foot .wap_foot_list{
    margin-bottom: 10px;
  }


}